Cold joint in a foundation wall?
Cold joint in a foundation wall?
(OP)
I have a client that wants to place a cold joint in a foundation wall. It's a residential structure and the foundation is being constructed with ICF's. The builder is worried about blow-out at the bottom of the forms as some of the walls are 11' tall. His concern seems legitimate, though I need to check the ICF manufacture's spec. sheets to see if this is really a concern or not. The question still remains though about having a cold joint in the foundation. I've never heard of this before in a residential structure and can not find a suitable reference in the ACI pertaining to cold joints.
The wall is reinforced for the lateral soil load with the rebar in the proverbial tension zone. In theory is seems like it should work as zero tension capacity is assumed for concrete anyway and the joint in the compression zone would be in compression, so that shouldn't matter either. I have some concerns about moisture infiltration, but I would really like to be able to cite a reference one way or another on whether or not a cold joint is allowed.
Can anyone help?
The wall is reinforced for the lateral soil load with the rebar in the proverbial tension zone. In theory is seems like it should work as zero tension capacity is assumed for concrete anyway and the joint in the compression zone would be in compression, so that shouldn't matter either. I have some concerns about moisture infiltration, but I would really like to be able to cite a reference one way or another on whether or not a cold joint is allowed.
Can anyone help?






RE: Cold joint in a foundation wall?
RE: Cold joint in a foundation wall?
The joint would be horizontal and about half the wall height. The rebar is running both vertically and horizontally. The vertical rebar is designed to resist the lateral earth loads and is continuous from the footing to the top of the wall.
RE: Cold joint in a foundation wall?
Pressure at the base of the form is going to be a function of time also.
RE: Cold joint in a foundation wall?
RE: Cold joint in a foundation wall?
Another alternative would be to reinforce the insulated forms part way up with traditional forms that are removed after the concrete cures.